. "\"Stimulates the exchange of guanyl nucleotides associated with the GTPase ARF. Under normal cellular physiological conditions, the concentration of GTP is higher than that of GDP, favoring the replacement of GDP by GTP in association with the GTPase.\" [GOC:mah]" . . "ARF guanyl-nucleotide exchange factor activity" . "Reactome:REACT_100970 \"trans-Golgi Network Coat Activation, Drosophila melanogaster\"" . "Reactome:REACT_101570 \"trans-Golgi Network Coat Activation, Caenorhabditis elegans\"" . "Reactome:REACT_101695 \"trans-Golgi Network Coat Activation, Canis familiaris\"" . "Reactome:REACT_101742 \"trans-Golgi Network Coat Activation, Arabidopsis thaliana\"" . "Reactome:REACT_101850 \"Arf1 Activation by GBF1, Arabidopsis thaliana\"" . "Reactome:REACT_101990 \"trans-Golgi Network Coat Activation, Rattus norvegicus\"" . "Reactome:REACT_102785 \"trans-Golgi Network Coat Activation, Taeniopygia guttata\"" . "Reactome:REACT_105642 \"Arf1 Activation by GBF1, Gallus gallus\"" . "Reactome:REACT_106445 \"trans-Golgi Network Coat Activation, Gallus gallus\"" . "Reactome:REACT_109563 \"trans-Golgi Network Coat Activation, Oryza sativa\"" . "Reactome:REACT_11099 \"Arf1 Activation by GBF1, Homo sapiens\"" . "Reactome:REACT_14808 \"trans-Golgi Network Coat Activation, Homo sapiens\"" . "Reactome:REACT_31480 \"trans-Golgi Network Coat Activation, Bos taurus\"" . "Reactome:REACT_31752 \"Arf1 Activation by GBF1, Xenopus tropicalis\"" . "Reactome:REACT_32323 \"trans-Golgi Network Coat Activation, Mus musculus\"" . "Reactome:REACT_32544 \"Arf1 Activation by GBF1, Oryza sativa\"" . "Reactome:REACT_34746 \"trans-Golgi Network Coat Activation, Xenopus tropicalis\"" . "Reactome:REACT_77659 \"Arf1 Activation by GBF1, Bos taurus\"" . "Reactome:REACT_80468 \"Arf1 Activation by GBF1, Sus scrofa\"" . "Reactome:REACT_81977 \"trans-Golgi Network Coat Activation, Schizosaccharomyces pombe\"" . "Reactome:REACT_86920 \"Arf1 Activation by GBF1, Caenorhabditis elegans\"" . "Reactome:REACT_87319 \"Arf1 Activation by GBF1, Drosophila melanogaster\"" . "Reactome:REACT_89002 \"Arf1 Activation by GBF1, Danio rerio\"" . "Reactome:REACT_89142 \"Arf1 Activation by GBF1, Taeniopygia guttata\"" . "Reactome:REACT_89319 \"trans-Golgi Network Coat Activation, Danio rerio\"" . "Reactome:REACT_90559 \"Arf1 Activation by GBF1, Rattus norvegicus\"" . "Reactome:REACT_90928 \"Arf1 Activation by GBF1, Schizosaccharomyces pombe\"" . "Reactome:REACT_90936 \"Arf1 Activation by GBF1, Canis familiaris\"" . "Reactome:REACT_98384 \"trans-Golgi Network Coat Activation, Sus scrofa\"" . "Reactome:REACT_99473 \"Arf1 Activation by GBF1, Mus musculus\"" . . .